Demo was a three-sport athlete for the Redmen earning multiple varsity letters in football, basketball, and baseball.  As a defensive back in football, he led the Lake Erie League in interceptions his senior season. In basketball, he was selected as the Most Improved Player by his coaches. In baseball, he was a two-year starter. He was selected as most athletic by his classmates in 1964.

He continued his education and athletic career at Denison University where he earned twelve varsity letters in football, basketball, and baseball. In football, he set numerous receiving records and earned all-conference honors.   In basketball, Demo’s Denison team won the conference championship and qualified for the NCAA tournament. A four- year starter in baseball, he was a .340 career hitter and also earned all-conference honors. He was inducted into the Denison University Athletic Hall of Fame in 1984.

Demo had a long career as a teacher and coach. He has competed in marathons and has competed in many basketball competitions including the Senior Olympics.  He was a part of 13 state championship senior teams and finished in the final four in the country twice. In masters basketball, he has been a member of 35 major tournament championships including 3 National Championships and 2 world championships. He is also a member of the Master’s Basketball Hall of Fame in Jacksonville, Florida.